*{
    margin: 0;
    padding: 0;
    border: none;
}
ul{
    list-style: none;
}
.container{
    width: 400px;
    height: 400px;
    margin: 0 auto;
    border: 5px solid #888;
    background-color: pink;
}
.container ul{
    width: 100%;
    height: 100%;
}
.container ul li{
    display: flex;
    border-bottom: 1px solid #888;
    background-color: skyblue;
}
.container ul li div{
    flex: 1;
    border: 1px solid #888;
    line-height: 100%;
    text-align: center;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}